Massac County, Illinois

Massac County population, land area and income

Massac County had 13,627 residents in the Census Vintage 2024 estimate, on 237.2 square miles of land. It ranks 75th of 102 in Illinois by population and 96th by land area. That works out to 57.5 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Illinois has 24,447 residents; Massac County is somewhat smaller.

Its SAIPE 2023 median household income of $58,202 is below the national county median among 3,143 counties with an estimate.

How Massac County's population changed since 2020

Massac County lost 510 residents between the July 2020 and July 2024 estimates, a drop of 3.6%. That ranks 90th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, Massac County recorded 525 births and 985 deaths, a natural change of -460. Net international migration added -14 and net domestic migration, people moving to or from other US counties, came to -63. The largest single component was natural change, which removed 460 people.

Where Massac County is

The Census internal point of Massac County is at 37.216100, -88.705700. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Massac County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Massac County

One incorporated place of 1,000+ people has residents in Massac County, 5,776 people together, or 42% of the county. Each figure counts only the part of the town inside Massac County; towns marked "part" extend into another county. The largest is Metropolis with 5,776.

Counties bordering Massac County

The Census 2024 county adjacency file lists 5 neighbors for Massac County, including 2 across a state line. The most populous is McCracken County, KY, with 67,550 residents. Distances run between Census internal points in a straight line.

• KY

  McCracken County, KY

  67,550 people

  11 mi S

• Johnson County

  13,320 people

  19 mi NNW

• KY

  Livingston County, KY

  8,815 people

  19 mi E

• Pulaski County

  4,879 people

  23 mi W

• Pope County

  3,703 people

  17 mi NNE

Distance to Springfield and the nearest big city

Springfield is 184.4 miles NNW of Massac County's internal point in a straight line. The nearest place of 100,000 or more is Evansville, IN (population 115,395), 83.4 miles away. The nearest place of 10,000 or more is Paducah, KY (population 26,712), 10.6 miles away.

Massac County FIPS code

The FIPS code of Massac County is 17127: state code 17 for Illinois plus county code 127. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $58,202.